The …A… from the sun broke up water into hydrogen and oxygen and the …B… escaped. Oxygen combined with ammonia and methane to form …C… . CO and others. The ozone layer was formed. As it cooled, the water vapour fell as rain, to fill all the depressions and form …D… Choose the correct option for A,B,C and D to complete the given paragraph, to NCERT textbook
A-IR rays, B-lighter , C-water, D-oceans
A-UV rays, B-lighter , C-water, D-oceans
A-UV rays, B-heavier , C-water, D-oceans
A-UV rays, B-heavier , C-water, D-oceans
Related Questions
Life appeared ________ years after the formation of earth
4.5 billion
1 billion
500 million
2 billion
The idea that the life originates from pre-existing life is referred as
Biogenesis theory
Special creation theory
Abiogenesis theory
Extraterrestrial theory
Life cannot originate from inorganic material on present earth, because of
High environmental pollution
Very low atmospheric temperature
Large amount of in atmosphere
Absence of appropriate materials
Life appeared
500 million years after the formation of earth
600 million years after the formation of earth
Four billion years back
Both (1) and (3)
The first life on earth consists of
Single-celled prokaryotes (bacteria and archaea)
Multicellular eukaryotes (plants and animals)
Viruses
Complex proteins
First life on the earth originated from non-living matters has been explained by
Theory of biogenesis
Theory of abiogenesis
Theory of special creation
Theory of extraterrestrial origin
Which of the following is the correct sequence of events in the origin of life?
I. Formation of protobionts
II. Synthesis of organic monomers
III. Synthesis of organic polymers
IV. Formation of DNA-based genetic systems
II, III, IV, I
II, III, IV
I, III, II, IV
II, III, I, IV
Origin of life as a result of chemical evolution has been properly explained by or the most logical biochemical theory of origin of life has been given by
Stanley Miller
Darwin
A I Oparin
S Fox
In the early earth, organic acids were produced by the combination of with
Ammonia and methane
Hydrogen
Organic matter
Sulphates and nitrates
…A… of Russia and …B…. of England proposed that the first form of life could have come from …C… non-living organic molecule. Choose the right option for A, B and C to compete the given NCERT statement
A-Oparin, B-Haldane, C-Post-existing
A-Haldane, B-Oparin, C-Post-existing
A-Oparin, B-Haldane, C-Pre-existing
A-Haldane, B-Oparin, C-Pre-existing
